1135 lines
43 KiB
PHP
1135 lines
43 KiB
PHP
<?php
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/**
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* (c) Kitodo. Key to digital objects e.V. <contact@kitodo.org>
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*
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* This file is part of the Kitodo and TYPO3 projects.
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*
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* @license GNU General Public License version 3 or later.
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* For the full copyright and license information, please read the
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* LICENSE.txt file that was distributed with this source code.
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*/
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/**
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* Plugin 'DLF: OAI-PMH Interface' for the 'dlf' extension.
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*
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* @author Sebastian Meyer <sebastian.meyer@slub-dresden.de>
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* @package TYPO3
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* @subpackage tx_dlf
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* @access public
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*/
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class tx_dlf_oai extends tx_dlf_plugin {
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public $scriptRelPath = 'plugins/oai/class.tx_dlf_oai.php';
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/**
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* Did an error occur?
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*
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* @var boolean
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* @access protected
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*/
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protected $error = FALSE;
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/**
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* This holds the OAI DOM object
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*
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* @var DOMDocument
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* @access protected
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*/
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protected $oai;
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/**
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* This holds the configuration for all supported metadata prefixes
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*
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* @var array
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* @access protected
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*/
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protected $formats = array (
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'oai_dc' => array (
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'schema' => 'http://www.openarchives.org/OAI/2.0/oai_dc.xsd',
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'namespace' => 'http://www.openarchives.org/OAI/2.0/oai_dc/',
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'requiredFields' => array ('record_id'),
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),
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'epicur' => array (
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'schema' => 'http://www.persistent-identifier.de/xepicur/version1.0/xepicur.xsd',
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'namespace' => 'urn:nbn:de:1111-2004033116',
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'requiredFields' => array ('purl', 'urn'),
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),
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'mets' => array (
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'schema' => 'http://www.loc.gov/standards/mets/version17/mets.v1-7.xsd',
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'namespace' => 'http://www.loc.gov/METS/',
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'requiredFields' => array ('location'),
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)
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);
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/**
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* Delete expired resumption tokens
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*
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* @access protected
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*
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* @return void
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*/
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protected function deleteExpiredTokens() {
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// Delete expired resumption tokens.
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$result = $GLOBALS['TYPO3_DB']->exec_DELETEquery(
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'tx_dlf_tokens',
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'tx_dlf_tokens.ident="oai" AND tx_dlf_tokens.tstamp<'.intval($GLOBALS['EXEC_TIME'] - $this->conf['expired'])
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);
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if ($GLOBALS['TYPO3_DB']->sql_affected_rows() === -1) {
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// Deletion failed.
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$this->devLog('[tx_dlf_oai->deleteExpiredTokens()] Could not delete expired resumption tokens', SYSLOG_SEVERITY_WARNING);
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}
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}
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/**
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* Process error
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*
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* @access protected
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*
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* @param string $type: Error type
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*
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* @return DOMElement XML node to add to the OAI response
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*/
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protected function error($type) {
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$this->error = TRUE;
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$error = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'error', htmlspecialchars($this->pi_getLL($type, $type, FALSE), ENT_NOQUOTES, 'UTF-8'));
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$error->setAttribute('code', $type);
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return $error;
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}
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/**
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* Load URL parameters
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*
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* @access protected
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*
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* @return void
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*/
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protected function getUrlParams() {
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$allowedParams = array (
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'verb',
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'identifier',
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'metadataPrefix',
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'from',
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'until',
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'set',
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'resumptionToken'
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);
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// Clear plugin variables.
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$this->piVars = array ();
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// Set only allowed parameters.
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foreach ($allowedParams as $param) {
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if (\TYPO3\CMS\Core\Utility\GeneralUtility::_GP($param)) {
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$this->piVars[$param] = \TYPO3\CMS\Core\Utility\GeneralUtility::_GP($param);
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}
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}
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}
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/**
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* Get unqualified Dublin Core data.
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* @see http://www.openarchives.org/OAI/openarchivesprotocol.html#dublincore
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*
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* @access protected
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*
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* @param array $metadata: The metadata array
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*
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* @return DOMElement XML node to add to the OAI response
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*/
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protected function getDcData(array $metadata) {
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$oai_dc = $this->oai->createElementNS($this->formats['oai_dc']['namespace'], 'oai_dc:dc');
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$oai_dc->setAttributeNS('http://www.w3.org/2000/xmlns/', 'xmlns:dc', 'http://purl.org/dc/elements/1.1/');
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$oai_dc->setAttributeNS('http://www.w3.org/2000/xmlns/', 'xmlns:xsi', 'http://www.w3.org/2001/XMLSchema-instance');
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$oai_dc->setAttributeNS('http://www.w3.org/2001/XMLSchema-instance', 'xsi:schemaLocation', $this->formats['oai_dc']['namespace'].' '.$this->formats['oai_dc']['schema']);
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$oai_dc->appendChild($this->oai->createElementNS('http://purl.org/dc/elements/1.1/', 'dc:identifier', htmlspecialchars($metadata['record_id'], ENT_NOQUOTES, 'UTF-8')));
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if (!empty($metadata['purl'])) {
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$oai_dc->appendChild($this->oai->createElementNS('http://purl.org/dc/elements/1.1/', 'dc:identifier', htmlspecialchars($metadata['purl'], ENT_NOQUOTES, 'UTF-8')));
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}
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if (!empty($metadata['urn'])) {
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$oai_dc->appendChild($this->oai->createElementNS('http://purl.org/dc/elements/1.1/', 'dc:identifier', htmlspecialchars($metadata['urn'], ENT_NOQUOTES, 'UTF-8')));
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}
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if (!empty($metadata['title'])) {
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$oai_dc->appendChild($this->oai->createElementNS('http://purl.org/dc/elements/1.1/', 'dc:title', htmlspecialchars($metadata['title'], ENT_NOQUOTES, 'UTF-8')));
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}
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if (!empty($metadata['author'])) {
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$oai_dc->appendChild($this->oai->createElementNS('http://purl.org/dc/elements/1.1/', 'dc:creator', htmlspecialchars($metadata['author'], ENT_NOQUOTES, 'UTF-8')));
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}
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if (!empty($metadata['year'])) {
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$oai_dc->appendChild($this->oai->createElementNS('http://purl.org/dc/elements/1.1/', 'dc:date', htmlspecialchars($metadata['year'], ENT_NOQUOTES, 'UTF-8')));
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}
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if (!empty($metadata['place'])) {
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$oai_dc->appendChild($this->oai->createElementNS('http://purl.org/dc/elements/1.1/', 'dc:coverage', htmlspecialchars($metadata['place'], ENT_NOQUOTES, 'UTF-8')));
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}
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$oai_dc->appendChild($this->oai->createElementNS('http://purl.org/dc/elements/1.1/', 'dc:format', 'application/mets+xml'));
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$oai_dc->appendChild($this->oai->createElementNS('http://purl.org/dc/elements/1.1/', 'dc:type', 'Text'));
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if (!empty($metadata['partof'])) {
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$result = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
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'tx_dlf_documents.record_id',
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'tx_dlf_documents',
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'tx_dlf_documents.uid='.intval($metadata['partof']).tx_dlf_helper::whereClause('tx_dlf_documents'),
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'',
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'',
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'1'
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);
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if ($GLOBALS['TYPO3_DB']->sql_num_rows($result)) {
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$partof = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($result);
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$oai_dc->appendChild($this->oai->createElementNS('http://purl.org/dc/elements/1.1/', 'dc:relation', htmlspecialchars($partof['record_id'], ENT_NOQUOTES, 'UTF-8')));
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}
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}
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return $oai_dc;
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}
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/**
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* Get epicur data.
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* @see http://www.persistent-identifier.de/?link=210
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*
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* @access protected
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*
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* @param array $metadata: The metadata array
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*
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* @return DOMElement XML node to add to the OAI response
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*/
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protected function getEpicurData(array $metadata) {
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// Define all XML elements with or without qualified namespace.
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if (empty($this->conf['unqualified_epicur'])) {
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$epicur = $this->oai->createElementNS($this->formats['epicur']['namespace'], 'epicur:epicur');
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$admin = $this->oai->createElementNS($this->formats['epicur']['namespace'], 'epicur:administrative_data');
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$delivery = $this->oai->createElementNS($this->formats['epicur']['namespace'], 'epicur:delivery');
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$update = $this->oai->createElementNS($this->formats['epicur']['namespace'], 'epicur:update_status');
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$transfer = $this->oai->createElementNS($this->formats['epicur']['namespace'], 'epicur:transfer');
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$format = $this->oai->createElementNS($this->formats['epicur']['namespace'], 'epicur:format', 'text/html');
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$record = $this->oai->createElementNS($this->formats['epicur']['namespace'], 'epicur:record');
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$identifier = $this->oai->createElementNS($this->formats['epicur']['namespace'], 'epicur:identifier', htmlspecialchars($metadata['urn'], ENT_NOQUOTES, 'UTF-8'));
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$resource = $this->oai->createElementNS($this->formats['epicur']['namespace'], 'epicur:resource');
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$ident = $this->oai->createElementNS($this->formats['epicur']['namespace'], 'epicur:identifier', htmlspecialchars($metadata['purl'], ENT_NOQUOTES, 'UTF-8'));
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} else {
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$epicur = $this->oai->createElement('epicur');
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$epicur->setAttribute('xmlns', $this->formats['epicur']['namespace']);
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$admin = $this->oai->createElement('administrative_data');
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$delivery = $this->oai->createElement('delivery');
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$update = $this->oai->createElement('update_status');
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$transfer = $this->oai->createElement('transfer');
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$format = $this->oai->createElement('format', 'text/html');
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$record = $this->oai->createElement('record');
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$identifier = $this->oai->createElement('identifier', htmlspecialchars($metadata['urn'], ENT_NOQUOTES, 'UTF-8'));
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$resource = $this->oai->createElement('resource');
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$ident = $this->oai->createElement('identifier', htmlspecialchars($metadata['purl'], ENT_NOQUOTES, 'UTF-8'));
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}
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// Add attributes and build XML tree.
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$epicur->setAttributeNS('http://www.w3.org/2000/xmlns/', 'xmlns:xsi', 'http://www.w3.org/2001/XMLSchema-instance');
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$epicur->setAttributeNS('http://www.w3.org/2001/XMLSchema-instance', 'xsi:schemaLocation', $this->formats['epicur']['namespace'].' '.$this->formats['epicur']['schema']);
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// Do we update an URN or register a new one?
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if ($metadata['tstamp'] == $metadata['crdate']) {
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$update->setAttribute('type', 'urn_new');
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} else {
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$update->setAttribute('type', 'url_update_general');
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}
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$delivery->appendChild($update);
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$transfer->setAttribute('type', 'http');
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$delivery->appendChild($transfer);
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$admin->appendChild($delivery);
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$epicur->appendChild($admin);
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$identifier->setAttribute('scheme', 'urn:nbn:de');
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$record->appendChild($identifier);
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$ident->setAttribute('scheme', 'url');
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$ident->setAttribute('type', 'frontpage');
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$ident->setAttribute('role', 'primary');
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$resource->appendChild($ident);
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$format->setAttribute('scheme', 'imt');
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$resource->appendChild($format);
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$record->appendChild($resource);
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$epicur->appendChild($record);
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return $epicur;
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}
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/**
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* Get METS data.
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* @see http://www.loc.gov/standards/mets/docs/mets.v1-7.html
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*
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* @access protected
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*
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* @param array $metadata: The metadata array
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*
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* @return DOMElement XML node to add to the OAI response
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*/
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protected function getMetsData(array $metadata) {
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$mets = NULL;
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// Load METS file.
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$xml = new DOMDocument();
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if ($xml->load($metadata['location'])) {
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// Get root element.
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$root = $xml->getElementsByTagNameNS($this->formats['mets']['namespace'], 'mets');
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if ($root->item(0) instanceof DOMNode) {
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// Import node into DOMDocument.
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$mets = $this->oai->importNode($root->item(0), TRUE);
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} else {
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$this->devLog('[tx_dlf_oai->getMetsData([data])] No METS part found in document with location "'.$metadata['location'].'"', SYSLOG_SEVERITY_ERROR, $metadata);
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}
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} else {
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$this->devLog('[tx_dlf_oai->getMetsData([data])] Could not load XML file from "'.$metadata['location'].'"', SYSLOG_SEVERITY_ERROR, $metadata);
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}
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if ($mets === NULL) {
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$mets = $this->oai->createElementNS('http://kitodo.org/', 'kitodo:error', htmlspecialchars($this->pi_getLL('error', 'Error!', FALSE), ENT_NOQUOTES, 'UTF-8'));
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}
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return $mets;
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}
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/**
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* The main method of the PlugIn
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*
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* @access public
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*
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* @param string $content: The PlugIn content
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* @param array $conf: The PlugIn configuration
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*
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* @return void
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*/
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public function main($content, $conf) {
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// Initialize plugin.
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$this->init($conf);
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// Turn cache off.
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$this->setCache(FALSE);
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// Get GET and POST variables.
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$this->getUrlParams();
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// Delete expired resumption tokens.
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$this->deleteExpiredTokens();
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// Create XML document.
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$this->oai = new DOMDocument('1.0', 'UTF-8');
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// Add processing instruction (aka XSL stylesheet).
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if (!empty($this->conf['stylesheet'])) {
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// Resolve "EXT:" prefix in file path.
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if (substr($this->conf['stylesheet'], 0, 4) == 'EXT:') {
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list ($extKey, $filePath) = explode('/', substr($this->conf['stylesheet'], 4), 2);
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if (\TYPO3\CMS\Core\Utility\ExtensionManagementUtility::isLoaded($extKey)) {
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$this->conf['stylesheet'] = \TYPO3\CMS\Core\Utility\ExtensionManagementUtility::siteRelPath($extKey).$filePath;
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}
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}
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$stylesheet = \TYPO3\CMS\Core\Utility\GeneralUtility::locationHeaderUrl($this->conf['stylesheet']);
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} else {
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// Use default stylesheet if no custom stylesheet is given.
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$stylesheet = \TYPO3\CMS\Core\Utility\GeneralUtility::locationHeaderUrl(\TYPO3\CMS\Core\Utility\ExtensionManagementUtility::siteRelPath($this->extKey).'plugins/oai/transform.xsl');
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}
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$this->oai->appendChild($this->oai->createProcessingInstruction('xml-stylesheet', 'type="text/xsl" href="'.htmlspecialchars($stylesheet, ENT_NOQUOTES, 'UTF-8').'"'));
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// Create root element.
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$root = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'OAI-PMH');
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$root->setAttributeNS('http://www.w3.org/2000/xmlns/', 'xmlns:xsi', 'http://www.w3.org/2001/XMLSchema-instance');
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$root->setAttributeNS('http://www.w3.org/2001/XMLSchema-instance', 'xsi:schemaLocation', 'http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd');
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// Add response date.
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$root->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'responseDate', gmdate('Y-m-d\TH:i:s\Z', $GLOBALS['EXEC_TIME'])));
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// Get response data.
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switch ($this->piVars['verb']) {
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case 'GetRecord':
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$response = $this->verbGetRecord();
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break;
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case 'Identify':
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$response = $this->verbIdentify();
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break;
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case 'ListIdentifiers':
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$response = $this->verbListIdentifiers();
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break;
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case 'ListMetadataFormats':
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$response = $this->verbListMetadataFormats();
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break;
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case 'ListRecords':
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$response = $this->verbListRecords();
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break;
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case 'ListSets':
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$response = $this->verbListSets();
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break;
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default:
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$response = $this->error('badVerb');
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}
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// Add request.
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$linkConf = array (
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'parameter' => $GLOBALS['TSFE']->id,
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'forceAbsoluteUrl' => 1
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);
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$request = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'request', htmlspecialchars($this->cObj->typoLink_URL($linkConf), ENT_NOQUOTES, 'UTF-8'));
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if (!$this->error) {
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foreach ($this->piVars as $key => $value) {
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$request->setAttribute($key, htmlspecialchars($value, ENT_NOQUOTES, 'UTF-8'));
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}
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}
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$root->appendChild($request);
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$root->appendChild($response);
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$this->oai->appendChild($root);
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$content = $this->oai->saveXML();
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// Clean output buffer.
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\TYPO3\CMS\Core\Utility\GeneralUtility::cleanOutputBuffers();
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// Send headers.
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header('HTTP/1.1 200 OK');
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header('Cache-Control: no-cache');
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header('Content-Length: '.strlen($content));
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header('Content-Type: text/xml; charset=utf-8');
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header('Date: '.date('r', $GLOBALS['EXEC_TIME']));
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header('Expires: '.date('r', $GLOBALS['EXEC_TIME'] + $this->conf['expired']));
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echo $content;
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// Flush output buffer and end script processing.
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ob_end_flush();
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exit;
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}
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/**
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* Continue with resumption token
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*
|
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* @access protected
|
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*
|
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* @return string Substitution for subpart "###RESPONSE###"
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*/
|
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protected function resume() {
|
|
// Get resumption token.
|
|
$result = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
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'tx_dlf_tokens.options AS options',
|
|
'tx_dlf_tokens',
|
|
'tx_dlf_tokens.ident="oai" AND tx_dlf_tokens.token='.$GLOBALS['TYPO3_DB']->fullQuoteStr($this->piVars['resumptionToken'], 'tx_dlf_tokens'),
|
|
'',
|
|
'',
|
|
'1'
|
|
);
|
|
|
|
if (!$GLOBALS['TYPO3_DB']->sql_num_rows($result)) {
|
|
// No resumption token found or resumption token expired.
|
|
return $this->error('badResumptionToken');
|
|
}
|
|
|
|
$resArray = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($result);
|
|
|
|
$resultSet = unserialize($resArray['options']);
|
|
|
|
return $this->generateOutputForDocumentList($resultSet);
|
|
|
|
}
|
|
|
|
/**
|
|
* Process verb "GetRecord"
|
|
*
|
|
* @access protected
|
|
*
|
|
* @return string Substitution for subpart "###RESPONSE###"
|
|
*/
|
|
protected function verbGetRecord() {
|
|
|
|
if (count($this->piVars) != 3 || empty($this->piVars['metadataPrefix']) || empty($this->piVars['identifier'])) {
|
|
return $this->error('badArgument');
|
|
}
|
|
|
|
if (!in_array($this->piVars['metadataPrefix'], array_keys($this->formats))) {
|
|
return $this->error('cannotDisseminateFormat');
|
|
}
|
|
|
|
$where = '';
|
|
|
|
if (!$this->conf['show_userdefined']) {
|
|
$where .= ' AND tx_dlf_collections.fe_cruser_id=0';
|
|
}
|
|
|
|
$record = $GLOBALS['TYPO3_DB']->exec_SELECT_mm_query(
|
|
'tx_dlf_documents.*,GROUP_CONCAT(DISTINCT tx_dlf_collections.oai_name ORDER BY tx_dlf_collections.oai_name SEPARATOR " ") AS collections',
|
|
'tx_dlf_documents',
|
|
'tx_dlf_relations',
|
|
'tx_dlf_collections',
|
|
'AND tx_dlf_documents.record_id='.$GLOBALS['TYPO3_DB']->fullQuoteStr($this->piVars['identifier'], 'tx_dlf_documents').' AND tx_dlf_documents.pid='.intval($this->conf['pages']).' AND tx_dlf_collections.pid='.intval($this->conf['pages']).' AND tx_dlf_relations.ident='.$GLOBALS['TYPO3_DB']->fullQuoteStr('docs_colls', 'tx_dlf_relations').$where.tx_dlf_helper::whereClause('tx_dlf_collections'),
|
|
'tx_dlf_documents.uid',
|
|
'tx_dlf_documents.tstamp',
|
|
'1'
|
|
);
|
|
|
|
if (!$GLOBALS['TYPO3_DB']->sql_num_rows($record)) {
|
|
return $this->error('idDoesNotExist');
|
|
}
|
|
|
|
$resArray = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($record);
|
|
|
|
// Check for required fields.
|
|
foreach ($this->formats[$this->piVars['metadataPrefix']]['requiredFields'] as $required) {
|
|
if (empty($resArray[$required])) {
|
|
return $this->error('cannotDisseminateFormat');
|
|
}
|
|
}
|
|
|
|
$GetRecord = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'GetRecord');
|
|
|
|
$recordNode = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'record');
|
|
|
|
$headerNode = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'header');
|
|
$headerNode->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'identifier', htmlspecialchars($resArray['record_id'], ENT_NOQUOTES, 'UTF-8')));
|
|
$headerNode->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'datestamp', gmdate('Y-m-d\TH:i:s\Z', $resArray['tstamp'])));
|
|
|
|
// Handle deleted documents.
|
|
// TODO: Use TYPO3 API functions here!
|
|
if ($resArray['deleted'] || $resArray['hidden']) {
|
|
$headerNode->setAttribute('status', 'deleted');
|
|
|
|
$recordNode->appendChild($headerNode);
|
|
|
|
} else {
|
|
foreach (explode(' ', $resArray['collections']) as $spec) {
|
|
$headerNode->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'setSpec', htmlspecialchars($spec, ENT_NOQUOTES, 'UTF-8')));
|
|
}
|
|
|
|
$recordNode->appendChild($headerNode);
|
|
|
|
$metadataNode = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'metadata');
|
|
|
|
switch ($this->piVars['metadataPrefix']) {
|
|
case 'oai_dc':
|
|
$metadataNode->appendChild($this->getDcData($resArray));
|
|
break;
|
|
|
|
case 'epicur':
|
|
$metadataNode->appendChild($this->getEpicurData($resArray));
|
|
break;
|
|
|
|
case 'mets':
|
|
$metadataNode->appendChild($this->getMetsData($resArray));
|
|
break;
|
|
}
|
|
|
|
$recordNode->appendChild($metadataNode);
|
|
}
|
|
|
|
$GetRecord->appendChild($recordNode);
|
|
|
|
return $GetRecord;
|
|
}
|
|
|
|
/**
|
|
* Process verb "Identify"
|
|
*
|
|
* @access protected
|
|
*
|
|
* @return DOMElement XML node to add to the OAI response
|
|
*/
|
|
protected function verbIdentify() {
|
|
|
|
// Check for invalid arguments.
|
|
if (count($this->piVars) > 1) {
|
|
return $this->error('badArgument');
|
|
}
|
|
|
|
// Get repository name and administrative contact.
|
|
// Use default values for an installation with incomplete plugin configuration.
|
|
|
|
$adminEmail = 'unknown@example.org';
|
|
$repositoryName = 'Kitodo.Presentation OAI-PMH interface (incomplete configuration)';
|
|
|
|
$result = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
|
|
'tx_dlf_libraries.oai_label AS oai_label,tx_dlf_libraries.contact AS contact',
|
|
'tx_dlf_libraries',
|
|
'tx_dlf_libraries.pid='.intval($this->conf['pages']).' AND tx_dlf_libraries.uid='.intval($this->conf['library']).tx_dlf_helper::whereClause('tx_dlf_libraries'),
|
|
'',
|
|
'',
|
|
''
|
|
);
|
|
|
|
if ($GLOBALS['TYPO3_DB']->sql_num_rows($result)) {
|
|
$resArray = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($result);
|
|
|
|
$adminEmail = htmlspecialchars(trim(str_replace('mailto:', '', $resArray['contact'])), ENT_NOQUOTES);
|
|
$repositoryName = htmlspecialchars($resArray['oai_label'], ENT_NOQUOTES);
|
|
|
|
} else {
|
|
$this->devLog('[tx_dlf_oai->verbIdentify()] Incomplete plugin configuration', SYSLOG_SEVERITY_NOTICE);
|
|
}
|
|
|
|
// Get earliest datestamp. Use a default value if that fails.
|
|
|
|
$earliestDatestamp = '0000-00-00T00:00:00Z';
|
|
|
|
$result = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
|
|
'tx_dlf_documents.tstamp AS tstamp',
|
|
'tx_dlf_documents',
|
|
'tx_dlf_documents.pid='.intval($this->conf['pages']),
|
|
'',
|
|
'tx_dlf_documents.tstamp ASC',
|
|
'1'
|
|
);
|
|
|
|
if ($GLOBALS['TYPO3_DB']->sql_num_rows($result)) {
|
|
list ($timestamp) = $GLOBALS['TYPO3_DB']->sql_fetch_row($result);
|
|
$earliestDatestamp = gmdate('Y-m-d\TH:i:s\Z', $timestamp);
|
|
} else {
|
|
$this->devLog('[tx_dlf_oai->verbIdentify()] No records found with PID "'.$this->conf['pages'].'"', SYSLOG_SEVERITY_NOTICE);
|
|
}
|
|
|
|
$linkConf = array (
|
|
'parameter' => $GLOBALS['TSFE']->id,
|
|
'forceAbsoluteUrl' => 1
|
|
);
|
|
$baseURL = htmlspecialchars($this->cObj->typoLink_URL($linkConf), ENT_NOQUOTES);
|
|
|
|
// Add identification node.
|
|
$Identify = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'Identify');
|
|
$Identify->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'repositoryName', $repositoryName));
|
|
$Identify->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'baseURL', $baseURL));
|
|
$Identify->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'protocolVersion', '2.0'));
|
|
$Identify->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'adminEmail', $adminEmail));
|
|
$Identify->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'earliestDatestamp', $earliestDatestamp));
|
|
$Identify->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'deletedRecord', 'transient'));
|
|
$Identify->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'granularity', 'YYYY-MM-DDThh:mm:ssZ'));
|
|
|
|
return $Identify;
|
|
}
|
|
|
|
/**
|
|
* Process verb "ListIdentifiers"
|
|
*
|
|
* @access protected
|
|
*
|
|
* @return string Substitution for subpart "###RESPONSE###"
|
|
*/
|
|
protected function verbListIdentifiers() {
|
|
|
|
// If we have a resumption token we can continue our work
|
|
if (!empty($this->piVars['resumptionToken'])) {
|
|
// "resumptionToken" is an exclusive argument.
|
|
if (count($this->piVars) > 2) {
|
|
return $this->error('badArgument');
|
|
} else {
|
|
return $this->resume();
|
|
}
|
|
}
|
|
|
|
// "metadataPrefix" is required and "identifier" is not allowed.
|
|
if (empty($this->piVars['metadataPrefix']) || !empty($this->piVars['identifier'])) {
|
|
return $this->error('badArgument');
|
|
}
|
|
|
|
if (!in_array($this->piVars['metadataPrefix'], array_keys($this->formats))) {
|
|
return $this->error('cannotDisseminateFormat');
|
|
}
|
|
|
|
try {
|
|
$documentSet = $this->fetchDocumentUIDs();
|
|
} catch (Exception $exception) {
|
|
return $this->error($exception->getMessage());
|
|
}
|
|
|
|
$resultSet = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance('tx_dlf_list');
|
|
|
|
$resultSet->reset();
|
|
$resultSet->add($documentSet);
|
|
$resultSet->metadata = array (
|
|
'completeListSize' => count($documentSet),
|
|
'metadataPrefix' => $this->piVars['metadataPrefix'],
|
|
);
|
|
|
|
return $this->generateOutputForDocumentList($resultSet);
|
|
|
|
}
|
|
|
|
/**
|
|
* Process verb "ListMetadataFormats"
|
|
*
|
|
* @access protected
|
|
*
|
|
* @return DOMElement XML node to add to the OAI response
|
|
*/
|
|
protected function verbListMetadataFormats() {
|
|
|
|
$resArray = array ();
|
|
|
|
// Check for invalid arguments.
|
|
if (count($this->piVars) > 1) {
|
|
if (empty($this->piVars['identifier']) || count($this->piVars) > 2) {
|
|
return $this->error('badArgument');
|
|
}
|
|
|
|
// Check given identifier.
|
|
$result = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
|
|
'tx_dlf_documents.*',
|
|
'tx_dlf_documents',
|
|
'tx_dlf_documents.pid='.intval($this->conf['pages']).' AND tx_dlf_documents.record_id='.$GLOBALS['TYPO3_DB']->fullQuoteStr($this->piVars['identifier'], 'tx_dlf_documents'),
|
|
'',
|
|
'',
|
|
'1'
|
|
);
|
|
|
|
if (!$GLOBALS['TYPO3_DB']->sql_num_rows($result)) {
|
|
return $this->error('idDoesNotExist');
|
|
}
|
|
|
|
$resArray = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($result);
|
|
}
|
|
|
|
// Add metadata formats node.
|
|
$ListMetadaFormats = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'ListMetadataFormats');
|
|
|
|
foreach ($this->formats as $prefix => $details) {
|
|
if (!empty($resArray)) {
|
|
foreach ($details['requiredFields'] as $required) {
|
|
if (empty($resArray[$required])) {
|
|
// Skip metadata formats whose requirements are not met.
|
|
continue 2;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Add format node.
|
|
$format = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'metadataFormat');
|
|
|
|
$format->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'metadataPrefix', htmlspecialchars($prefix, ENT_NOQUOTES, 'UTF-8')));
|
|
$format->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'schema', htmlspecialchars($details['schema'], ENT_NOQUOTES, 'UTF-8')));
|
|
$format->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'metadataNamespace', htmlspecialchars($details['namespace'], ENT_NOQUOTES, 'UTF-8')));
|
|
|
|
$ListMetadaFormats->appendChild($format);
|
|
}
|
|
|
|
return $ListMetadaFormats;
|
|
}
|
|
|
|
/**
|
|
* Process verb "ListRecords"
|
|
*
|
|
* @access protected
|
|
*
|
|
* @return string Substitution for subpart "###RESPONSE###"
|
|
*/
|
|
protected function verbListRecords() {
|
|
|
|
// Check for invalid arguments.
|
|
if (!empty($this->piVars['resumptionToken'])) {
|
|
// "resumptionToken" is an exclusive argument.
|
|
if (count($this->piVars) > 2) {
|
|
return $this->error('badArgument');
|
|
} else {
|
|
return $this->resume();
|
|
}
|
|
|
|
}
|
|
|
|
if (empty($this->piVars['metadataPrefix']) || !empty($this->piVars['identifier'])) {
|
|
// "metadataPrefix" is required and "identifier" is not allowed.
|
|
return $this->error('badArgument');
|
|
}
|
|
|
|
// Check "metadataPrefix" for valid value.
|
|
if (!in_array($this->piVars['metadataPrefix'], array_keys($this->formats))) {
|
|
return $this->error('cannotDisseminateFormat');
|
|
}
|
|
|
|
try {
|
|
$documentSet = $this->fetchDocumentUIDs();
|
|
} catch (Exception $exception) {
|
|
return $this->error($exception->getMessage());
|
|
}
|
|
|
|
$resultSet = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance('tx_dlf_list');
|
|
|
|
$resultSet->reset();
|
|
$resultSet->add($documentSet);
|
|
$resultSet->metadata = array (
|
|
'completeListSize' => count($documentSet),
|
|
'metadataPrefix' => $this->piVars['metadataPrefix'],
|
|
);
|
|
|
|
return $this->generateOutputForDocumentList($resultSet);
|
|
}
|
|
|
|
/**
|
|
* Process verb "ListSets"
|
|
*
|
|
* @access protected
|
|
*
|
|
* @return string Substitution for subpart "###RESPONSE###"
|
|
*/
|
|
protected function verbListSets() {
|
|
|
|
// Check for invalid arguments.
|
|
if (count($this->piVars) > 1) {
|
|
if (!empty($this->piVars['resumptionToken'])) {
|
|
return $this->error('badResumptionToken');
|
|
} else {
|
|
return $this->error('badArgument');
|
|
}
|
|
}
|
|
|
|
$where = '';
|
|
|
|
if (!$this->conf['show_userdefined']) {
|
|
$where = ' AND tx_dlf_collections.fe_cruser_id=0';
|
|
}
|
|
|
|
$result = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
|
|
'tx_dlf_collections.oai_name AS oai_name,tx_dlf_collections.label AS label',
|
|
'tx_dlf_collections',
|
|
'tx_dlf_collections.sys_language_uid IN (-1,0) AND NOT tx_dlf_collections.oai_name=\'\' AND tx_dlf_collections.pid='.intval($this->conf['pages']).$where.tx_dlf_helper::whereClause('tx_dlf_collections'),
|
|
'tx_dlf_collections.oai_name',
|
|
'tx_dlf_collections.oai_name',
|
|
''
|
|
);
|
|
|
|
if (!$GLOBALS['TYPO3_DB']->sql_num_rows($result)) {
|
|
return $this->error('noSetHierarchy');
|
|
}
|
|
|
|
$ListSets = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'ListSets');
|
|
|
|
while ($resArray = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($result)) {
|
|
|
|
$set = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'set');
|
|
|
|
$set->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'setSpec', htmlspecialchars($resArray['oai_name'], ENT_NOQUOTES, 'UTF-8')));
|
|
$set->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'setName', htmlspecialchars($resArray['label'], ENT_NOQUOTES, 'UTF-8')));
|
|
|
|
$ListSets->appendChild($set);
|
|
}
|
|
|
|
return $ListSets;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* @return array
|
|
* @throws Exception
|
|
*/
|
|
private function fetchDocumentUIDs() {
|
|
$solr_query = '';
|
|
|
|
if (!$this->conf['show_userdefined']) {
|
|
$where = ' AND tx_dlf_collections.fe_cruser_id=0';
|
|
}
|
|
|
|
// Check "set" for valid value.
|
|
if (!empty($this->piVars['set'])) {
|
|
|
|
// For SOLR we need the index_name of the collection,
|
|
// For DB Query we need the UID of the collection
|
|
$result = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
|
|
'tx_dlf_collections.index_name AS index_name, tx_dlf_collections.uid AS uid, tx_dlf_collections.index_search as index_query ',
|
|
'tx_dlf_collections',
|
|
'tx_dlf_collections.pid='.intval($this->conf['pages']).' AND tx_dlf_collections.oai_name='.$GLOBALS['TYPO3_DB']->fullQuoteStr($this->piVars['set'],
|
|
'tx_dlf_collections').$where.tx_dlf_helper::whereClause('tx_dlf_collections'),
|
|
'',
|
|
'',
|
|
'1'
|
|
);
|
|
|
|
if (!$GLOBALS['TYPO3_DB']->sql_num_rows($result)) {
|
|
throw new Exception('noSetHierarchy');
|
|
}
|
|
|
|
$resArray = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($result);
|
|
|
|
if ($resArray['index_query'] != "") {
|
|
$solr_query .= '('.$resArray['index_query'].')';
|
|
} else {
|
|
$solr_query .= 'collection:'.'"'.$resArray['index_name'].'"';
|
|
}
|
|
|
|
} else {
|
|
// If no set is specified we have to query for all collections
|
|
$solr_query .= 'collection:* NOT collection:""';
|
|
|
|
}
|
|
|
|
// Check for required fields.
|
|
foreach ($this->formats[$this->piVars['metadataPrefix']]['requiredFields'] as $required) {
|
|
$solr_query .= ' NOT '.$required.':""';
|
|
}
|
|
|
|
$from = "*";
|
|
// Check "from" for valid value.
|
|
if (!empty($this->piVars['from'])) {
|
|
|
|
// Is valid format?
|
|
if (is_array($date_array = strptime($this->piVars['from'],
|
|
'%Y-%m-%dT%H:%M:%SZ')) || is_array($date_array = strptime($this->piVars['from'], '%Y-%m-%d'))) {
|
|
|
|
$timestamp = gmmktime($date_array['tm_hour'], $date_array['tm_min'], $date_array['tm_sec'], $date_array['tm_mon'] + 1,
|
|
$date_array['tm_mday'], $date_array['tm_year'] + 1900);
|
|
|
|
$from = date("Y-m-d", $timestamp).'T'.date("H:i:s", $timestamp).'.000Z';
|
|
|
|
} else {
|
|
throw new Exception('badArgument');
|
|
}
|
|
}
|
|
|
|
$until = "*";
|
|
// Check "until" for valid value.
|
|
if (!empty($this->piVars['until'])) {
|
|
|
|
// Is valid format?
|
|
if (is_array($date_array = strptime($this->piVars['until'],
|
|
'%Y-%m-%dT%H:%M:%SZ')) || is_array($date_array = strptime($this->piVars['until'], '%Y-%m-%d'))) {
|
|
|
|
$timestamp = gmmktime($date_array['tm_hour'], $date_array['tm_min'], $date_array['tm_sec'], $date_array['tm_mon'] + 1,
|
|
$date_array['tm_mday'], $date_array['tm_year'] + 1900);
|
|
|
|
$until = date("Y-m-d", $timestamp).'T'.date("H:i:s", $timestamp).'.999Z';
|
|
|
|
if ($from != "*" && $from > $until) {
|
|
throw new Exception('badArgument');
|
|
}
|
|
|
|
} else {
|
|
throw new Exception('badArgument');
|
|
}
|
|
}
|
|
|
|
// Check "from" and "until" for same granularity.
|
|
if (!empty($this->piVars['from']) && !empty($this->piVars['until'])) {
|
|
if (strlen($this->piVars['from']) != strlen($this->piVars['until'])) {
|
|
throw new Exception('badArgument');
|
|
}
|
|
}
|
|
|
|
$solr_query .= ' AND timestamp:['.$from.' TO '.$until.']';
|
|
|
|
$documentSet = array ();
|
|
|
|
$solr = tx_dlf_solr::getInstance($this->conf['solrcore']);
|
|
|
|
// We only care about the UID in the results and want them sorted
|
|
$parameters = array ("fl" => "uid", "sort" => "uid asc");
|
|
|
|
$result = $solr->search_raw($solr_query, $parameters);
|
|
|
|
if (empty($result)) {
|
|
throw new Exception('noRecordsMatch');
|
|
}
|
|
|
|
foreach ($result as $doc) {
|
|
$documentSet[] = $doc->uid;
|
|
}
|
|
|
|
return $documentSet;
|
|
}
|
|
|
|
/**
|
|
* @param tx_dlf_list $documentListSet
|
|
* @return DOMElement
|
|
*/
|
|
private function generateOutputForDocumentList($documentListSet) {
|
|
|
|
$documentsToProcess = $documentListSet->removeRange(0, intval($this->conf['limit']));
|
|
$verb = $this->piVars['verb'];
|
|
|
|
$documents = $GLOBALS['TYPO3_DB']->exec_SELECT_mm_query(
|
|
'tx_dlf_documents.*,GROUP_CONCAT(DISTINCT tx_dlf_collections.oai_name ORDER BY tx_dlf_collections.oai_name SEPARATOR " ") AS collections',
|
|
'tx_dlf_documents',
|
|
'tx_dlf_relations',
|
|
'tx_dlf_collections',
|
|
'AND tx_dlf_documents.uid IN ('.implode(',', $GLOBALS['TYPO3_DB']->cleanIntArray($documentsToProcess)).') AND tx_dlf_documents.pid='.intval($this->conf['pages']).' AND tx_dlf_collections.pid='.intval($this->conf['pages']).' AND tx_dlf_relations.ident='.$GLOBALS['TYPO3_DB']->fullQuoteStr('docs_colls', 'tx_dlf_relations').tx_dlf_helper::whereClause('tx_dlf_collections'),
|
|
'tx_dlf_documents.uid',
|
|
'tx_dlf_documents.tstamp',
|
|
$this->conf['limit']
|
|
);
|
|
|
|
$output = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', $verb);
|
|
|
|
while ($resArray = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($documents)) {
|
|
// Add header node.
|
|
$header = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'header');
|
|
|
|
$header->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'identifier', htmlspecialchars($resArray['record_id'], ENT_NOQUOTES, 'UTF-8')));
|
|
$header->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'datestamp', gmdate('Y-m-d\TH:i:s\Z', $resArray['tstamp'])));
|
|
|
|
// Check if document is deleted or hidden.
|
|
// TODO: Use TYPO3 API functions here!
|
|
if ($resArray['deleted'] || $resArray['hidden']) {
|
|
// Add "deleted" status.
|
|
$header->setAttribute('status', 'deleted');
|
|
|
|
if ($verb == 'ListRecords') {
|
|
// Add record node.
|
|
$record = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'record');
|
|
|
|
$record->appendChild($header);
|
|
$output->appendChild($record);
|
|
|
|
} elseif ($verb == 'ListIdentifiers') {
|
|
$output->appendChild($header);
|
|
}
|
|
|
|
} else {
|
|
// Add sets.
|
|
foreach (explode(' ', $resArray['collections']) as $spec) {
|
|
$header->appendChild($this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'setSpec', htmlspecialchars($spec, ENT_NOQUOTES, 'UTF-8')));
|
|
}
|
|
|
|
if ($verb == 'ListRecords') {
|
|
// Add record node.
|
|
$record = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'record');
|
|
|
|
$record->appendChild($header);
|
|
|
|
// Add metadata node.
|
|
$metadata = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'metadata');
|
|
|
|
$metadataPrefix = $this->piVars['metadataPrefix'];
|
|
if (!$metadataPrefix) {
|
|
// If we resume an action the metadataPrefix is stored with the documentSet
|
|
$metadataPrefix = $documentListSet->metadata['metadataPrefix'];
|
|
}
|
|
|
|
switch ($metadataPrefix) {
|
|
case 'oai_dc':
|
|
$metadata->appendChild($this->getDcData($resArray));
|
|
break;
|
|
|
|
case 'epicur':
|
|
$metadata->appendChild($this->getEpicurData($resArray));
|
|
break;
|
|
|
|
case 'mets':
|
|
$metadata->appendChild($this->getMetsData($resArray));
|
|
break;
|
|
}
|
|
|
|
$record->appendChild($metadata);
|
|
$output->appendChild($record);
|
|
|
|
} elseif ($verb == 'ListIdentifiers') {
|
|
$output->appendChild($header);
|
|
}
|
|
}
|
|
}
|
|
|
|
$output->appendChild($this->generateResumptionTokenForDocumentListSet($documentListSet));
|
|
|
|
return $output;
|
|
}
|
|
|
|
/**
|
|
* @param tx_dlf_list $documentListSet
|
|
* @return DOMElement
|
|
*/
|
|
private function generateResumptionTokenForDocumentListSet($documentListSet) {
|
|
$resumptionToken = $this->oai->createElementNS('http://www.openarchives.org/OAI/2.0/', 'resumptionToken');
|
|
|
|
if ($documentListSet->count() != 0) {
|
|
|
|
$token = uniqid();
|
|
|
|
$GLOBALS['TYPO3_DB']->exec_INSERTquery(
|
|
'tx_dlf_tokens',
|
|
array (
|
|
'tstamp' => $GLOBALS['EXEC_TIME'],
|
|
'token' => $token,
|
|
'options' => serialize($documentListSet),
|
|
'ident' => 'oai',
|
|
)
|
|
);
|
|
|
|
if ($GLOBALS['TYPO3_DB']->sql_affected_rows() == 1) {
|
|
$resumptionToken->setAttribute('resumptionToken', htmlspecialchars($token, ENT_NOQUOTES, 'UTF-8'));
|
|
} else {
|
|
$this->devLog('[tx_dlf_oai->verb'.$this->piVars['verb'].'()] Could not create resumption token', SYSLOG_SEVERITY_ERROR);
|
|
}
|
|
}
|
|
|
|
$resumptionToken->setAttribute('cursor', intval($documentListSet->metadata['completeListSize']) - count($documentListSet));
|
|
$resumptionToken->setAttribute('completeListSize', $documentListSet->metadata['completeListSize']);
|
|
$resumptionToken->setAttribute('expirationDate', gmdate('Y-m-d\TH:i:s\Z', $GLOBALS['EXEC_TIME'] + $this->conf['expired']));
|
|
|
|
return $resumptionToken;
|
|
}
|
|
|
|
private function devLog($message, $severity, $data = NULL) {
|
|
if (TYPO3_DLOG) {
|
|
\TYPO3\CMS\Core\Utility\GeneralUtility::devLog($message, $this->extKey, $severity, $data);
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
if (defined('TYPO3_MODE') && $TYPO3_CONF_VARS[TYPO3_MODE]['XCLASS']['ext/dlf/plugins/oai/class.tx_dlf_oai.php']) {
|
|
include_once($TYPO3_CONF_VARS[TYPO3_MODE]['XCLASS']['ext/dlf/plugins/oai/class.tx_dlf_oai.php']);
|
|
|
|
}
|